Unencrypted SSH

I use OpenSSH on my home
network. But the machines aren't really fast enough to do
strong encryption for remotely displayed X applications. This
patch lets you specify the cipher 'none' when connecting:

Update: this patch is now against openssh-3.0.2p1, although it
should apply cleanly to some earlier versions. Now both the
versions of the ssh protocol (1 and 2) will accept none. When
using ssh protocol 1 with -c none and entering a password, you
will be warned that the password will be sent in plain text.
However with protocol version 2 and no encryption, plain
text passwords are prompted for and sent without
warning. If you are concerned about this I recommend
removing the second part of the patch, or else adding another
patch to disable password prompting entirely for SSH2
connections (remove the 'password' authmethod in sshconnect2.c).

If anyone knows how to add a warning message in
userauth_passwd() depending on what encryption
system is chosen, please let me know. I couldn't work it out.